Solubilised Vat Blue 3
Name:C.I.Solubilised Vat Blue 3,C.I.73056
Molecular Structure: Indigo class
C.I.Solubilised Vat Blue 3,C.I.73056,CAS 5156-38-7,547.27,C16H9BrN2Na2O8S2
Molecular Formula:C16H9BrN2Na2O8S2
Molecular Weight: 547.27
CAS Registry Number:5156-38-7
Manufacturing Methods : (a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Blue 3 leuco; (b) in the Pyridine with metal (such as copper, iron, zinc, etc) and Sulfur trioxide source (such as Sulfur trioxide, Chlorosulfonic acid or Methyl chlorosulfonate, etc.) processing C.I. Vat Blue 3. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.
Properties and Applications: red light blue. Soluble in water is blue.
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 4 | 3 | 3-4 | 4 | 3-4 | ||
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